Abstract
IEEE 802.16e is a mobile version of Worldwide Interoperability for Microwave Access (WiMAX) that plays an important role in the evolution towards 4G. In this study, we focus on multimedia performance measurement for the purpose of a more realistic mobile WiMAX network test. This study aims to make a contribution in better understanding the mobile WiMAX performance for multimedia applications. For that purpose, we employ Voice over Internet Protocol (VoIP) and video streaming to test the network performance, where two distinct evaluation systems are used, professional and user-friendly. Our test results show that the mobile WiMAX network can support well the bandwidth-intense and delay-sensitive multimedia application. We find that the VoIP quality at the cell center is perfect, where the value of Perceptual Evaluation of Speech Quality exceeds 4. At the cell edge, the quality is degraded but still adequate. We also observe that the downlink of mobile WiMAX network can support video streaming up to 4 Mbps with the Mean Opinion Score (MOS) value of 4.5. On the uplink, the bitrate of 1 Mbps is supported with MOS 4.5 at the cell center and with MOS 3.2 at the cell edge, respectively. Our experiments further indicate that a smooth playback of YouTube 480P video is consistently provided. Finally, the handover case has very limited impact to the overall quality degradation of both VoIP and video streaming.
Highlights
With the increasing popularity of networked applications, multimedia traffics are expected to account for a large portion in the next-generation mobile communication systems
We find that the Voice over Internet Protocol (VoIP) performance on the downlink is perfect, which can be even comparable with that of 100M Ethernet
Our experiments further indicate that a smooth playback of YouTube 480P video is consistently provided, even though the startup latency is obviously bigger than those over Ethernet
Summary
With the increasing popularity of networked applications, multimedia traffics are expected to account for a large portion in the next-generation mobile communication systems. Many technologies are being developed to support broadband wireless communication, among which Worldwide Interoperability for Microwave Access (WiMAX) and Long-Term Evolution (LTE) are prominent on the aspects of high-data rate and long-range coverage. Both WiMAX and LTE are playing an important role in the evolution towards 4G. Since the standardization of mobile WiMAX is a little earlier than that of LTE, most of pilots are based on the WiMAX technology. Besides the standardizations of radio interfaces, many projects are launched to enhance
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
